{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "19891649",
    "entityType": "User",
    "nonce": "0x711a43d68d160d643b76c73bca7c62be79b326d92dd2497e464d9da6468dccef",
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    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}